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Question
An atom of 235U (Z= 92) disintegrates to 207Pb (Z= 82) with a half-life of about a billion years by emitting seven alpha particles and ______ 
particles:
A) 3
B) 4
C) 5
D) 6
E) 7
Answer
This answer is hidden. It contains 1 characters.
Related questions
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Q:
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